溶接部ならびに鋳物の透過 X 線写真にあらわれる影(第 5 報) : 影と延性

概要

論文の詳細を見る
Influence of the mottled appearance on the tensile and bend ductility was investigated. The mottling frequently observed on radiogrphs of austenitic stainless steel weldmetals and castings. Longitudinal weldmetal specimens with different levels of contrast of the mottling were prepared. The results may be summarized as follows. 1. Progressive increase in the contrast produced a marked decrease in both tensile and bend ductility. 2. Cracks appeared on bend specimens were intergranular. The intergranular cracking strongly suggests that microfissures were present, while such specimens show pronounced mottling. The results seem to suggest that low density grain boundaries containing such a defect as microfissures may be important concerning the mechanism of the mottled appearance.
社団法人溶接学会の論文
1975-02-05